Locomotive.



G. J. HATZ.

LOGOMOTIVE. v APPLICATION FILED APB..18,1910.

974,486. Patented Nov. 1, 1910.

Z BHBETS-SHBET 1.

a. Q. "OHM G. J. HATZ. LOGOMOTIVB. APPLICATION FILED APILIB, 1910.974,486. Patented Nov. 1, 1910.

2 SHEETS-SHEET 2.

W I 9 WQoM- I 1% UNITED STATES PATENT OFFICE.

GEORGE J. HATZ, 0F OMAHA, NEBRASKA.

ILocoMo'rIvE.

-To all 407mm it may concern:

Be it known that'I, Gnoncn J. HATZ, a l

citizen of the United States, residin at Omaha, in the county of Douglasand tate of Nebraska, have invented certain new and useful Improvementsin Locomotives, of which the following is a specification.

This invention-relates to locomotives, and

'cinders and sparks which are inevitably drawn through the boiler tubes,and the result has been either to discharge such sparks, or cinders in a,burnin condition, or else to cause their retention in the smoke boxunduly, thus necessitating too frequent cleaning or causing the burningout of the smoke box.

By my invention the products of combustion are caused to pursue acircuitous ath in the smokebox with frequent and su den changes 1ndirection, so that while the draft of the locomotive is not impaired thecinders [are completely broken up and extinguished prior to theirdischar e through the stack.

J A structure embo ying the various features of the invention isillustrated in the drawings, wherein:

Figure 1 is a lo itudinal vertical section on the center line 0 thesmoke box of a locomotive, showing the invention ap lied; and

7 is the stack of the locomotive and 8 is the exhaust nozzle, bringingsteam from the cylinders. I I

All the above enumerated parts are essentially identical with those inordinary use on steam locomotives.

- As is usual in locomotive construction, the exhaust nozzle-8 and thestack 7 are alined. In the present construction an extension draft pipe9is provided which is. connected Specification of Letters'ratent.

Application filed April 18, 1910. Serial No. 556,097.

Patented Nov. 1, 1910.

l with'the stack and extends downward to a point a short distance abovethe exhaust nozzle 8, and is provided at its lower extremity with aflaring rim 10. This extension pipe 9 passes through and makes closejoints with two cylindrical drums or shells 11 and 12, which areconcentric with each other and substantially concentric with thesmokebox 1. Thus the flaring mouth 10 of the draft pipe 9 is within thedrum 12, and all gases passing out through the stack 7 are drawn fromthe interior of the drum 12. Similarly the exhaust nozzle 8 extendsthrough the walls of the two drums, making close joints therewith andterminating at a point within the inner drum, as clearly indicated inthe drawings. The outer drum 11 is constructed of sheet metal or plateand at its rear is closed by a conical head 13, also of plate, havingits convex side toward the tube sheet. The head 13' thus serves as adeflector plate for the gases discharged from the front ends of theboiler tubes, and has a tendency to equalize the draft upon thesevarious tubes. In the construction shown the apex of the conical head13'isin con tact with the tube sheet and this is the usual construction.I

The forward end 14 of the drum 11 and a portion of the sides of the drumadjacent the forward end, as at 15, are constructedof netting orerforated sheet metal or analogous materia so that ases from the boilertubes first pass around t e drum 11, and then enter through theforaminous portion of the drum. A portion of the end 14L; removablymounted with bolts 16 to give access to the interior of the drum. Thedrum is supported in position by wrou ht-iron braces 17, and further bthe baffle p ate 18, at its u per side. This p ate 18 extends through 0a portion of the circumference of the annu ar space intervening betweenthe drum 11 and the smoke box walls 1. In order to vary its effect uponthe draft it is provided with adjustable extension plates 19, at eitherside. These plates 19 are held by, the bolts 20 to the baffle plate 18and may be attached thereto at various positions so as to vary the totalWidth of this bafile at will. K second bafile 21 is suspended from thelower side of the drum 11 and extends a part of the radial distance fromthe drum to the walls of the smoke box 1, and through only a part of the.circumference of the annular space intervening between the drum and thesmoke box. The

able vertically to vary the extent of the baffle.

Thus the bafile 18 prevents the passage of gases forward over the top ofthe drum 11,

the circumferential range of this baffle being adjustable,'while thebafiie 21 being also adjustable may produce any desired restriction,within a limited range to the flow of gases past the under side of thedrum.

The drum 12 is constructed entirely of foraminous material, with theexception of the front plate 25, which is of sheet metal and is providedwith a removable door or cover 26 to permit access to its interior. It

is supported within the drum 11 in any suitable manner, bolts 27 withdistance pieces 28 being indicated in the drawings. The drum 12 ispartially open at its rear side, the net; ting 29 formlng this portionbeing inclined inward as at 30 and terminating at a point adjacent thetip of the exhaust nozzle 8. Below this point'the drum is open. To enterthis open portion of the drum, the products of combustion must passthrough the rear portion of the drum 11, and a series of shelves orbaffles 31, also of foraminous material intercept and tend todisintegrate any cinders that may be carried by the gases. Thus theproducts of combustion passing through the head 14 of the drum 11,either pass through the sides of the drum 12 or the rear thereof to itsinterior, and are then drawn up through the extension draft pipe 9 andstack 7 to the atmosphere by the action of the blast from the exhaustnozzle 8.

From the above description it will be ob against various obstructions sothat they are rapidly disintegrated and broken up, with the result thatby the time they are discharged from the stack they arepracticallyextinguished, or-if not extinguished so small in size as to burn upbefore doing any damage. As a result of this action, it is possible touse rather coarse netting and consequently, although the gases pursue alonger course, it is, nevertheless relatively free. draft is not impededand there is less tendency'for cinders tobe deposited in the smoke Ibox.

The provision of the conical head 13 tends to equalize the draft effectupon the various boiler tubes. The shelves 231 are particu- Thus theturcs of the 'two baffle plates permit a. nice adjustment of theseplates to the particular locomotive. I

it is to be understood that in designing the structure these bafi'lescan be proportioned so as to be approximately correct for the particularlocomotive, the adjustable feature thus serving to permit variationsthat actual operation indicates to be desirable. Thus the exactproportions indicated in the drawings are given as merely illustrative,and the bafiie 21 as Well as the bafiie 18 may be made to embrace agreater or less proportion of the circumference of the annular spacebetween the drum 11 and the smoke box 1, according to the particulardesign and requirements of the locomotive.

Although I have described in detail the various features of thestructure it is to be understood that minor variations can of course bemade without departing from the spirit of the invention.

Having thus described my invention, what 1. The combination of a smokebox; a

plurality of drums located therein, each drum having one closed end, thesaid drums 'being mounted one within another with the closed end of oneadjacent the open end of the next and with spaces intervening betweentheir walls to form a sinuous smoke passage from the smoke box to theinnermost drum; and a smoke stack adapted to carry in the open ends ofsaid drums; and av smoke stack connected to said innermost chamber.

3. The combination of a smoke box; a plurality of drums, locatedtherein, each drum having one closed end; the said drums being mountedone within another with the closed end of'one adjacent the open end ofthe next, and with spaces intervening between their walls to form asinuous smoke passage from the smoke. box to the innermost drum; screensof foraminous material in the open ends of said drums; battles offoraminous material in said sinuous passage; and a smoke stack connectedto said innermost chamber.

4. The combination of a smoke box; a-plurality of drums, locatedtherein, each drum having one closed end, the said drums being mountedone within another with the closed end of one adj acentthe open end ofthe next, and with spaces intervening between their the smoke boxto theinnermost vdrum;

walls to form a sinuous smoke passage from screens of foraminousmaterial in the open ends of said drums; bafiies of foraminous materialin said sinuous passa e; baflie plates within the smoke box an outsidesaid drums; means for adjusting the area of sald bafile plates; and asmoke stack connected to said innermost chamber.

5. The combination of a smoke box, a

drum in said smoke box having one closed end; a screen of foraminousmaterlal 1n the open end of said drum; baflies of foraminous materialupon the interior of the closed end of said drum adapted to receive anddisintegrate'the larger cinders; and means for withdrawing smoke fromsaid drum at a point adjacent the baffles.

6-. The combination of a smoke box; a drum mounted therein closed at itsrear end and open at its forward end; a screen of forammous material inthe open end of said drum; a second drum within the first} closed at itsforward end and open at its rear end; a screen of foraminous materialextendin artially across the open end of said sec0n drum; and a smokestack connected to said second drum.

7. The combination of a smoke-box; a

drummounted therein closed at its rear end and sides and open at itsforward end; a

screen of foraminous material, in said 0 enend; a second drum within thefirst close at its forward end and having sides offoraminousmaterial; ascreenof foraminous matemal extending partially across the open end ofsaid secon rum; and a'smoke-stack connected to said second drum. 8. Thecombination of a smoke box; a

drum mounted therein closed at its rear end 40 andsides and open at itsforward end; a screen of foraminou'smaterial, in said 0 n end;'bafflesof ,foraniinous materiakwit in said drum at its rear e d; a secondwithin the first closed at its forward .end and second drum.

9. The combination of ,a smoke box; 'a drum therein having'its forwardend open and its rear-end closed by a conical head adapted to serve as adeflector to gases entering the smoke box; a screen of foraminous 5material in said open end; a plurality of battles of foraminous materialdisposed within said drum upon the conical head thereof and adapted toreceive and disinte rate the "larger cmdersfand a smoke stack or with,60

drawing smoke from said drum.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. V

' GEORGE J. HATZ. Witnesses:

BARTHOLOMEW JULIEN, Commune J. Canny.

